UDP Control

Properties Methods Events Config Settings Errors

The UDP control is used to facilitate UDP (datagram) communications. It can act both as a client and a server and communicate with any number of hosts simultaneously, as well as generate and receive broadcast packets.

Syntax

UDP

Remarks

The interface of the control is similar to the interface of TCPClient, only much simpler. The control is activated/deactivated through the Active property. This property enables or disables sends or receives. The data can be sent in the same way as TCPClient, using the Send method and specifying the text to send. This is identical to assigning data to the DataToSend property. The destination is specified using the RemoteHost and RemotePort properties. Inbound data is received through the DataIn event.

If the UseConnection config setting is set to True, then a local association is created with the remote host. Otherwise, the control can receive datagrams (packets) from any host, and send datagrams to any host. Packets can be broadcast on the local net by setting the destination (RemoteHost) to 255.255.255.255.

The operation of the control is almost completely asynchronous. All calls, except the ones that deal with domain name resolution, operate through Windows messages (no blocking calls). The gain in performance is considerable when compared to using blocking calls.

Property List

The following is the full list of the properties of the control with short descriptions. Click on the links for further details.


AcceptData	This property enables or disables data reception (the DataIn event).
Active	Indicates whether the control is active.
DataToSend	A string of data to be sent to the remote host. Write-only property.
DontRoute	If this property is set to True, it forces the socket to send data directly to the interface (no routing).
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPort	The UDP port in the local host where UDP binds.
RemoteHost	The address of the remote host. Domain names are resolved to IP addresses.
RemotePort	The UDP port in the remote host.
TimeToLive	The maximum number of subnets that a datagram can traverse.

Method List

The following is the full list of the methods of the control with short descriptions. Click on the links for further details.


Activate	Enables sending and receiving of data.
Config	Sets or retrieves a configuration setting.
Deactivate	Disables sending and receive of data.
DoEvents	Processes events from the internal message queue.
PauseData	This method pauses data reception.
ProcessData	This method reenables data reception after a call to PauseData .
Reset	Reset the control.
ResolveRemoteHost	Resolves the hostname in RemoteHost to an IP address.
Send	Send data to the remote host.
SendBytes	Send data to the remote host.
SendText	Send data to the remote host.

Event List

The following is the full list of the events fired by the control with short descriptions. Click on the links for further details.


DataIn	Fired when data is received.
Error	Fired when information is available about errors during data delivery.
ReadyToSend	Fired when the control is ready to send data.

Config Settings

The following is a list of config settings for the control with short descriptions. Click on the links for further details.


CaptureIPPacketInfo	Used to capture the packet information.
DelayHostResolution	Whether the hostname is resolved when RemoteHost is set.
DestinationAddress	Used to get the destination address from the packet information.
DontFragment	Used to set the Don't Fragment flag of outgoing packets.
LocalHost	The name of the local host through which connections are initiated or accepted.
LocalPort	The port in the local host where the control binds.
MaxPacketSize	The maximum length of the packets that can be received.
QOSDSCPValue	Used to specify an arbitrary QOS/DSCP setting (optional).
QOSTrafficType	Used to specify QOS/DSCP settings (optional).
ShareLocalPort	If set to True, allows more than one instance of the control to be active on the same local port.
UseConnection	Determines whether to use a connected socket.
UseIPv6	Whether or not to use IPv6.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
CodePage	The system code page used for Unicode to Multibyte translations.
MaskSensitive	Whether sensitive data is masked in log messages.
UseInternalSecurityAPI	Whether or not to use the system security libraries or an internal implementation.

AcceptData Property (UDP Control)

This property enables or disables data reception (the DataIn event).

Syntax

udpcontrol.AcceptData[=boolean]

Default Value

True

Remarks

This property enables or disables data reception (the DataIn event). Setting this property to False, temporarily disables data reception (and the DataIn event). Setting this property to True, reenables data reception.

Note: It is recommended to use the PauseData or ProcessData method instead of setting this property.

This property is not available at design time.

Data Type

Boolean

Active Property (UDP Control)

Indicates whether the control is active.

Syntax

udpcontrol.Active[=boolean]

Default Value

False

Remarks

This property indicates whether the control is currently active and can send or receive data.

If UseConnection is set to True, then a local association (connection) to the remote host and port is also created.

Note: Use the Activate or Deactivate method to control whether the control is active.

This property is not available at design time.

Data Type

Boolean

DataToSend Property (UDP Control)

This property is deprecated. Please use the SendBytes method or the SendText method instead.

A string of data to be sent to the remote host. Write-only property.

Syntax

udpcontrol.DataToSend[=string]

Default Value

Remarks

Assigning a string to the DataToSend property makes the control send the string to the remote host. The Send method provides similar functionality.

Attempts to send the string assigned to DataToSend as a complete message. If system buffers are full, or the message cannot be delivered for any other reason, an error is fired, and no portion of the message is sent. This is different from TCP where portions of the messages can be sent. UDP sends either a complete message or nothing at all.

If you are sending data to the remote host faster than it can process it, or faster than the network's bandwidth allows, the outgoing queue might fill up. When this happens, DataToSend fails with error 25036: "[10035] Operation would block" (WSAEWOULDBLOCK). You can trap this error, and then try to send the data again.

Example (Send Data)

UDPControl.LocalPort = 8765 UDPControl.RemotePort = 8765 UDPControl.RemoteHost = "HostNameOrIPAddress" UDPControl.Active = True UDPControl.DataToSend = "Hello!"

To read or write binary data to the property, a Variant (Byte Array) version is provided in .DataToSendB.

This property is write-only and not available at design time.

Data Type

Binary String

DontRoute Property (UDP Control)

If this property is set to True, it forces the socket to send data directly to the interface (no routing).

Syntax

udpcontrol.DontRoute[=boolean]

Default Value

False

Remarks

If this property is set to True, it forces the socket to send data directly to the interface (no routing). Normally, IP sockets send packets of data through routers and gateways until they reach the final destination. If this property is set to True, then data will be delivered on the local subnet only.

This property is not available at design time.

Data Type

Boolean

LocalHost Property (UDP Control)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

udpcontrol.LocalHost[=string]

Default Value

Remarks

The LocalHost property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the control initiate connections (or accept in the case of server controls) only through that interface.

If the control is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface).

NOTE: LocalHost is not persistent. You must always set it in code, and never in the property window.

Data Type

String

LocalPort Property (UDP Control)

The UDP port in the local host where UDP binds.

Syntax

udpcontrol.LocalPort[=integer]

Default Value

Remarks

The LocalPort property must be set before UDP is activated (Active is set to True). It instructs the control to bind to a specific port (or communication endpoint) in the local machine.

Setting it to 0 (default) enables the TCP/IP stack to choose a port at random. The chosen port will be shown by the LocalPort property after the connection is established.

LocalPort cannot be changed once the control is Active. Any attempt to set the LocalPort property when the control is Active will generate an error.

The LocalPort property is useful when trying to connect to services that require a trusted port in the client side.

Data Type

Integer

RemoteHost Property (UDP Control)

The address of the remote host. Domain names are resolved to IP addresses.

Syntax

udpcontrol.RemoteHost[=string]

Default Value

Remarks

The RemoteHost property specifies the IP address (IP number in dotted internet format) or Domain Name of the remote host.

If RemoteHost is set to 255.255.255.255, the control broadcasts data on the local subnet.

If the RemoteHost property is set to a Domain Name, a DNS request is initiated and upon successful termination of the request, the RemoteHost property is set to the corresponding address. If the search is not successful, an error is returned.

If UseConnection is set to True, the RemoteHost must be set before the control is activated (Active is set to True).

Data Type

String

RemotePort Property (UDP Control)

The UDP port in the remote host.

Syntax

udpcontrol.RemotePort[=integer]

Default Value

Remarks

The RemotePort is the UDP port on the RemoteHost to send UDP datagrams to.

A valid port number (a value between 1 and 65535) is required.

If UseConnection is set to True, the RemotePort must be set before the control is activated (Active is set to True).

Data Type

Integer

TimeToLive Property (UDP Control)

The maximum number of subnets that a datagram can traverse.

Syntax

udpcontrol.TimeToLive[=integer]

Default Value

Remarks

The default value for this property is 0, which tells the control to use the default TTL value of the underlying TCP/IP subsystem. Depending on the application, you can specify a value between 1 and 255.

Data Type

Integer

Activate Method (UDP Control)

Enables sending and receiving of data.

Syntax

udpcontrol.Activate

Remarks

This method enables sending and receiving of data. When called the control will create a communication endpoint (socket) which can be used for sending and receiving UDP messages. This method must be called before using the control to send and receive data.

If the UseConnection configuration setting is set to , then a local association (connection) to the remote host is also created.

Config Method (UDP Control)

Sets or retrieves a configuration setting.

Syntax

udpcontrol.Config ConfigurationString

Remarks

Config is a generic method available in every control. It is used to set and retrieve configuration settings for the control.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Deactivate Method (UDP Control)

Disables sending and receive of data.

Syntax

udpcontrol.Deactivate

Remarks

This method disables sending and receiving of data. When called the control will destroy the existing socket and disable data communications.

DoEvents Method (UDP Control)

Processes events from the internal message queue.

Syntax

udpcontrol.DoEvents

Remarks

When DoEvents is called, the control processes any available events. If no events are available, it waits for a preset period of time, and then returns.

PauseData Method (UDP Control)

This method pauses data reception.

Syntax

udpcontrol.PauseData

Remarks

This method pauses data reception when called. While data reception is paused, the DataIn event will not fire. Call ProcessData to reenable data reception.

ProcessData Method (UDP Control)

This method reenables data reception after a call to PauseData .

Syntax

udpcontrol.ProcessData

Remarks

This method reenables data reception after a previous call to PauseData. When PauseData is called, the DataIn event will not fire. To reenable data reception and allow DataIn to fire, call this method.

Note: This method is used only after previously calling PauseData. It does not need to be called to process incoming data by default.

Reset Method (UDP Control)

Reset the control.

Syntax

udpcontrol.Reset

Remarks

This method will reset the control's properties to their default values.

ResolveRemoteHost Method (UDP Control)

Resolves the hostname in RemoteHost to an IP address.

Syntax

udpcontrol.ResolveRemoteHost

Remarks

This method resolves the hostname specified by RemoteHost to an IP address. The resolved value is available in the RemoteHost property after this method returns.

In most cases calling this method is not necessary, the control will resolve the hostname automatically when necessary. If DelayHostResolution is this method may be called to manually resolve RemoteHost if desired.

Send Method (UDP Control)

Send data to the remote host.

Syntax

udpcontrol.Send Text

Remarks

Calling this method is equivalent to setting the DataToSend property to Text.

Example (Send Data)

UDPControl.LocalPort = 8765 UDPControl.RemotePort = 8765 UDPControl.RemoteHost = "HostNameOrIPAddress" UDPControl.Active = True UDPControl.Send("Hello!")

SendBytes Method (UDP Control)

Send data to the remote host.

Syntax

udpcontrol.SendBytes Data

Remarks

Calling this method is equivalent to call SendBytes/SendText method.

Example (Send Data)

UDPControl.LocalPort = 8765 UDPControl.RemotePort = 8765 UDPControl.RemoteHost = "HostNameOrIPAddress" UDPControl.Active = True UDPControl.Send("Hello!")

SendText Method (UDP Control)

Send data to the remote host.

Syntax

udpcontrol.SendText Text

Remarks

Calling this method is equivalent to call SendBytes/SendText method.

Example (Send Data)

UDPControl.LocalPort = 8765 UDPControl.RemotePort = 8765 UDPControl.RemoteHost = "HostNameOrIPAddress" UDPControl.Active = True UDPControl.Send("Hello!")

DataIn Event (UDP Control)

Fired when data is received.

Syntax

Sub udpcontrol_DataIn(Datagram As String, SourceAddress As String, SourcePort As Integer)

Remarks

The DataIn event is fired every time a new datagram is received.

Datagram contains the packet as sent by the remote host.

SourceAddress contains the IP number (Internet address) of the remote host, and SourcePort contains the port from which the packet originated.

Note: Events are not re-entrant. Performing time-consuming operations within this event will prevent it from firing again in a timely manner and may affect overall performance.

Error Event (UDP Control)

Fired when information is available about errors during data delivery.

Syntax

Sub udpcontrol_Error(ErrorCode As Integer, Description As String)

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the control fails with an error.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

ReadyToSend Event (UDP Control)

Fired when the control is ready to send data.

Syntax

Sub udpcontrol_ReadyToSend()

Remarks

The ReadyToSend event indicates that the underlying TCP/IP subsystem is ready to accept data after a failed DataToSend.

Config Settings (UDP Control)

The control accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the control, access to these internal properties is provided through the Config method.

UDP Config Settings

CaptureIPPacketInfo: Used to capture the packet information.

If this is set to true, the component will capture the IP packet information.

The default value for this setting is False.

Note: This setting is only available in Windows.

DelayHostResolution: Whether the hostname is resolved when RemoteHost is set.

This setting specifies whether a hostname is resolved immediately when RemoteHost is set. If the control will resolve the hostname and the IP address will be present in the RemoteHost property. If , the hostname is not resolved until needed by the component when a method to connect or send data is called. If desired, ResolveRemoteHost may called to manually resolve the value in RemoteHost at any time.

The default value is .

DestinationAddress: Used to get the destination address from the packet information.

If CaptureIPPacketInfo is set to true, then this will be populated with the packet's destination address when a packet is received. This information will be accessible in the DataIn event.

Note: This setting is only available in Windows.

DontFragment: Used to set the Don't Fragment flag of outgoing packets.

When set to True, packets sent by the control will have the Don't Fragment flag set. The default value is False.

LocalHost: The name of the local host through which connections are initiated or accepted.

The LocalHost setting contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

If the control is connected, the LocalHost setting shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multi-homed hosts (machines with more than one IP interface).

LocalPort: The port in the local host where the control binds.

This must be set before a connection is attempted. It instructs the control to bind to a specific port (or communication endpoint) in the local machine.

Setting this to 0 (default) enables the system to choose a port at random. The chosen port will be shown by LocalPort after the connection is established.

LocalPort cannot be changed once a connection is made. Any attempt to set this when a connection is active will generate an error.

This; setting is useful when trying to connect to services that require a trusted port in the client side. An example is the remote shell (rsh) service in UNIX systems.

MaxPacketSize: The maximum length of the packets that can be received.

This setting specifies the maximum size of the datagrams that the control will accept without truncation.

QOSDSCPValue: Used to specify an arbitrary QOS/DSCP setting (optional).

UseConnection must be True to use this setting. This option allows you to specify an arbitrary DSCP value between 0 and 63. The default is 0. When set to the default value the component will not set a DSCP value.

Note: This setting uses the qWAVE API is only available on Windows 7, Windows Server 2008 R2, and later.

QOSTrafficType: Used to specify QOS/DSCP settings (optional).

UseConnection must be True to use this setting. You may specify either the text or integer values: BestEffort (0), Background (1), ExcellentEffort (2), AudioVideo (3), Voice (4), and Control (5).

Note: This setting uses the qWAVE API which is only available on Windows Vista and Windows Server 2008 or above.

Note: QOSTrafficType must be set before setting Active to true.

ShareLocalPort: If set to True, allows more than one instance of the control to be active on the same local port.

This option must be set before the control is activated through the Active property or it will have no effect.

The default value for this setting is False.

UseConnection: Determines whether to use a connected socket.

UseConnection specifies whether the control should use a connected socket or not. The connection is defined as an association in between the local address/port and the remote address/port. As such, this is not a connection in the traditional TCP sense. What it means is only that the control will send and receive data only to and from the specified destination.

The default value for this setting is False.

UseIPv6: Whether or not to use IPv6.

By default, the component expects an IPv4 address for local and remote host properties, and will create an IPv4 socket. To use IPv6 instead, set this to True.

Socket Config Settings

AbsoluteTimeout: Determines whether timeouts are inactivity timeouts or absolute timeouts.

If AbsoluteTimeout is set to True, any method which does not complete within Timeout seconds will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.

Note: This option is not valid for UDP ports.

FirewallData: Used to send extra data to the firewall.

When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g. headers for custom authentication schemes).

InBufferSize: The size in bytes of the incoming queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. Increasing the value of the InBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the control is activated the InBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

OutBufferSize: The size in bytes of the outgoing queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. Increasing the value of the OutBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the control is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

Base Config Settings

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

MaskSensitive: Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to to mask sensitive data. The default is .

This setting only works on these controls: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

UseInternalSecurityAPI: Whether or not to use the system security libraries or an internal implementation.

When set to , the control will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to tells the control to use the internal implementation instead of using the system security libraries.

This setting is set to by default on all platforms.

Trappable Errors (UDP Control)

UDP Errors


	20105 UDP is already Active.
	20107 You cannot change the LocalPort while the control is Active.
	20108 You cannot change the LocalHost at this time. A connection is in progress.
	20110 The control must be Active for this operation.
	20113 Cannot change MaxPacketSize while the control is Active.
	20114 Cannot change ShareLocalPort option while the control is Active.
	20115 Cannot change RemoteHost when UseConnection is set and the control Active.
	20116 Cannot change RemotePort when UseConnection is set and the control is Active.
	20117 RemotePort can't be zero when UseConnection is set. Please specify a valid service port number.
	20118 Cannot change UseConnection while the control is Active.
	20119 Message can't be longer than MaxPacketSize.
	20120 Message too short.
	20435 Unable to convert string to selected CodePage

SSL Errors


	20271 Cannot load specified security library.
	20272 Cannot open certificate store.
	20273 Cannot find specified certificate.
	20274 Cannot acquire security credentials.
	20275 Cannot find certificate chain.
	20276 Cannot verify certificate chain.
	20277 Error during handshake.
	20281 Error verifying certificate.
	20282 Could not find client certificate.
	20283 Could not find server certificate.
	20284 Error encrypting data.
	20285 Error decrypting data.

TCP/IP Errors


	25005 [10004] Interrupted system call.
	25010 [10009] Bad file number.
	25014 [10013] Access denied.
	25015 [10014] Bad address.
	25023 [10022] Invalid argument.
	25025 [10024] Too many open files.
	25036 [10035] Operation would block.
	25037 [10036] Operation now in progress.
	25038 [10037] Operation already in progress.
	25039 [10038] Socket operation on non-socket.
	25040 [10039] Destination address required.
	25041 [10040] Message too long.
	25042 [10041] Protocol wrong type for socket.
	25043 [10042] Bad protocol option.
	25044 [10043] Protocol not supported.
	25045 [10044] Socket type not supported.
	25046 [10045] Operation not supported on socket.
	25047 [10046] Protocol family not supported.
	25048 [10047] Address family not supported by protocol family.
	25049 [10048] Address already in use.
	25050 [10049] Can't assign requested address.
	25051 [10050] Network is down.
	25052 [10051] Network is unreachable.
	25053 [10052] Net dropped connection or reset.
	25054 [10053] Software caused connection abort.
	25055 [10054] Connection reset by peer.
	25056 [10055] No buffer space available.
	25057 [10056] Socket is already connected.
	25058 [10057] Socket is not connected.
	25059 [10058] Can't send after socket shutdown.
	25060 [10059] Too many references, can't splice.
	25061 [10060] Connection timed out.
	25062 [10061] Connection refused.
	25063 [10062] Too many levels of symbolic links.
	25064 [10063] File name too long.
	25065 [10064] Host is down.
	25066 [10065] No route to host.
	25067 [10066] Directory not empty
	25068 [10067] Too many processes.
	25069 [10068] Too many users.
	25070 [10069] Disc Quota Exceeded.
	25071 [10070] Stale NFS file handle.
	25072 [10071] Too many levels of remote in path.
	25092 [10091] Network subsystem is unavailable.
	25093 [10092] WINSOCK DLL Version out of range.
	25094 [10093] Winsock not loaded yet.
	26002 [11001] Host not found.
	26003 [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
	26004 [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
	26005 [11004] Valid name, no data record (check DNS setup).